Ni70Cr30 iku paduan nikel-kromium austenitik sing cocog kanggo aplikasi suhu nganti 1250°C. Kandungan kromium sing dhuwur (rata-rata 30%) nyedhiyakake umur sing apik banget, utamane ing aplikasi tungku. Ni70Cr30 ditondoi kanthi resistivitas sing dhuwur, tahan oksidasi sing apik, daktilitas sing apik sawise digunakake lan kemampuan las sing apik banget.
Ni70Cr30 digunakake kanggo elemen pemanas listrik ing tungku industri. Aplikasi khas yaiku: tungku listrik lan enameling, pemanas panyimpenan, tungku lan kiln kanthi atmosfer sing owah.
Sifat Mekanik Khas (1.0mm)
Strip nikrom
| Kinerja\ materi | Cr10Ni90 | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 | |
| Komposisi | Ni | 90 | Ngaso | Ngaso | 55.0~61.0 | 34.0~37.0 | 30.0~34.0 |
| Cr | 10 | 20.0~23.0 | 28.0~31.0 | 15.0~18.0 | 18.0~21.0 | 18.0~21.0 | |
| Fe | ≤1.0 | ≤1.0 | Ngaso | Ngaso | Ngaso | ||
| Suhu maksimalºC | 1300 | 1200 | 1250 | 1150 | 1100 | 1100 | |
| Titik leleh ºC | 1400 | 1400 | 1380 | 1390 | 1390 | 1390 | |
| Kapadhetan g/cm3 | 8.7 | 8.4 | 8.1 | 8.2 | 7.9 | 7.9 | |
| Resistivitas ing 20ºC((μΩ·m) | 1.09±0.05 | 1.18±0.05 | 1.12±0.05 | 1.00±0.05 | 1,04±0,05 | ||
| Pemanjangan nalika pecah | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | |
| Panas spesifik J/g.ºC | 0.44 | 0.461 | 0.494 | 0.5 | 0.5 | ||
| Konduktivitas termal KJ/m.hºC | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 | ||
| Koefisien ekspansi garis a×10-6/ (20~1000ºC) | 18 | 17 | 17 | 19 | 19 | ||
| Struktur mikrografik | Austenit | Austenit | Austenit | Austenit | Austenit | ||
| Sifat magnetik | Non-magnetik | Non-magnetik | Non-magnetik | Magnetik sing ringkih | Magnetik sing ringkih | ||
| Kabel Resistensi | ||
| RW30 | Nomer Kulon 1.4864 | Nikel 37%, Krom 18%, Wesi 45% |
| RW41 | UNS N07041 | Nikel 50%, Krom 19%, Kobalt 11%, Molibdenum 10%, Titanium 3% |
| RW45 | Nomer Kulon 2.0842 | Nikel 45%, Tembaga 55% |
| RW60 | Nomer Kulon 2.4867 | Nikel 60%, Krom 16%, Wesi 24% |
| RW60 | UNS NO6004 | Nikel 60%, Krom 16%, Wesi 24% |
| RW80 | Nomer Kulon 2.4869 | Nikel 80%, Krom 20% |
| RW80 | UNS NO6003 | Nikel 80%, Krom 20% |
| RW125 | Nomer Kulon 1.4725 | Wesi BAL, Krom 19%, Aluminium 3% |
| RW145 | Nomer Kulon 1.4767 | Wesi BAL, Krom 20%, Aluminium 5% |
| RW155 | Wesi BAL, Krom 27%, Aluminium 7%, Molibdenum 2% | |
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